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%I #9 Aug 09 2017 23:01:27
%S 29,0,59,79,11119,139,179,199,239,29292929292929299,31319,379,419,439,
%T 479,0,599,619,67679,719,739,797979799,839,89899,979797979,1019,1039,
%U 1071071071079,1091091091099,1131139,1279,1319,1371371371379,1399,1499
%N Smallest prime of the form concatenation of prime(n) with itself followed by a 9, or 0 if no such prime exists.
%C a(16)=0 since the concatenation of 53 with itself, followed by a 9, is always composite. a(36), if it exists, has more than 12000 digits. - _Giovanni Resta_, Apr 07 2006
%Y Cf. A092992, A092993, A092994.
%K base,nonn
%O 1,1
%A _Amarnath Murthy_, Mar 28 2004
%E More terms from _Sam Alexander_, Jan 09 2005
%E More terms from _Giovanni Resta_, Apr 07 2006
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